Superwicking crosslinked polyurethane foam composition containing amino acid
US4740528A · kind A · utility
57Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Jul 18, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/425
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An absorbent superwicking crosslinked polyurethane foam composition, into which is incorporated an effective amount of at least one amino acid, a one percent by weight aqueous solution of which has a pH of no more than about 8. The amino acid contains one amino group and at least one carboxylic acid group. A method for preparing such compositions also is described. The polyurethane foam composition is useful as a sponge and in the manufacture of such absorbent composite structures as disposable diapers, incontinent products, disposable bibs, feminine care products such as tampons and napkins, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.